220/30 kv end-user substation technical · pdf file220/30 kv end-user substation ... mv/lv...
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ABB S.p.A. – Power Systems Division
"11S.p.A.
Power Systems Division
TECHNICAL SPECIFICATION
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Customer
Project
220/30 kV end-user substation
Technical Offer
00
Rev. Description Date Prepared Controlled Approved
ABB S.p.A. – Power Systems Division
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INDEX
1 INTRODUCTION 3
1.1 Documentation and information of reference 3
1.2 Reference documents and standards 3
1.3 Site and environmental conditions 4
1.4 Electrical technical characteristics 4
2 220/30KV END-USER SUBSTATION 5
2.1 Technical description of SS layout 5
2.2 Battery limit of supply 6
2.3 Exclusions from scope of supply 6
2.4 Technical characteristics of equipment 8
2.5 Erection, Commissioning and technical documentations 17
ANNEXES:
- Annex 1: HV SS Equipment - Annex 2: MV SS Equipment
- Annex 3: Protection and Control System for SS
- Annex 4: Layout and Sections for SS
- Annex 5: Single Line diagram for SS
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1 INTRODUCTION
The present Technical Specification refers to the following scope of work:
Design, supply, erection, test and commissioning of a 220/30kV Substation side end
user
1.1 Documentation and information of reference
The definition of the characteristics and the amounts of equipment and materials described in
the present technical specification is based on the following documentation:
220/30kV SS single line diagram n° 01.02.00
220/30kV SS layout n° 01.02.01
Project technical specification:
“Relazione tecnica stazione “Su Scioffu”” – n° 03.01.06
“Relazione tecnica progetto preliminare “Su Scioffu”” – n° 03.01.03
Therefore the characteristics and the amounts of the present technical specification will be
verified and, where necessary, modified in order to adapt them to requirement of the final
design.
1.2 Reference documents and standards
The substations and its equipment shall be designed, manufactured, erected and tested
according to the following main standards and laws:
IEC standards
ISO standards
DPR 547 dated 27 April 1955
Laws 46/90, 626/94
ISPESL regulations
In particular:
IEC-60056 HV Alternating currents Circuit Breakers
IEC-60439 LV Switchgear and control gear assemblies
IEC-60502 Extruded solid dielectric insulated power cables for rated voltages from
1 kV up to 30 kV
IEC-60947 LV switchgear and control gear
IEC-60227 Electrical equipment within LV systems
EN-50164, 61663 Lightning protection system
IEC-60076 Transformers and reactors
IEC-60831 Specifications for capacitors
IEC-60354 Loading guide for oil-immersed power transformers
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IEC-60296 On-Load tap-changers
1.3 Site and environmental conditions
Height above sea level <1000 m
Climate moderate
Environment temperature -5+40 °C
Relative humidity 90 %
Wind velocity 30 m/s
Seismic 0.2 g
Soil carrying capacity >= 3kg/cmq
1.4 Electrical technical characteristics
Nominal voltage 220 kV
Maximum system voltage 245 kV
Rated Frequency 50 Hz
Power frequency withstand voltage 460 kV
Impulse withstand voltage 1050 kV
Nominal current: 2000 A
Rated short duration current 40 kA x 1 s
Specific creepage distance 25 mm/kV
HV equipment is positioned according to CEI 11-1 considering the clearance distances
foreseen for the system and impulse voltage values of 245 kV and 1050 kV.
In particular:
- Minimum height from ground of live parts: 4500 mm
- Distance between phases axis of equipment: 2200 mm
It is hereby guaranteed that all supplied equipment shall be adequate to the state of the art and
of the best quality, and suitable for a long-term safe operation in the locations foreseen.
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2 220/30kV end-user Substation
2.1 Technical description of SS layout
SS is equipped with:
One (1) bay for incoming line composed of:
• One (1) three-phase disconnecting switch with grounding blades • Three (3) capacitive voltage transformers
• One (1) circuit breaker, three-pole operation
• Three (3) current transformers
• Three (3) inductive voltage transformers for fiscal measures
Two (2) bays for power transformers each composed of:
• One (1) three-phase disconnecting switch without grounding blades • One (1) circuit breaker, three-pole operation
• Three (3) current transformers
• Three (3) surge arresters
• One (1) 50/63MVA power transformer
• One (1) marshalling kiosk
One (1) busbars system composed of:
• Six (6) post-insulators • One (1) three-phase grounding blades
• Three (3) capacitive voltage transformers
Metallic structures and HV terminals and connections
One (1) MV switchgear
Two (2) MV/LV auxiliary transformers
Panels board for Protection and Control system
Panels board for RTU for Local control and telecontrol
One (1) work station for local control
One (1) disturbance recorder
Two (2) AC/CC distribution panels and auxiliary systems (rectifiers and battery)
One (1) energy measure panels for HV side
Nine (9) metering panels for outgoing MV lines
LV-MV Cables
One (1) generator set
Internal lighting system and electrical sockets for SS building
External lighting system
Fire detection system
Intrusion detection system
Control access system
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HVAC system
Secondary earthing system
Only design for primary earthing system
2.2 Battery limit of supply
The battery limit of supply is the following:
220kV Terna SS side:
• Metallic structures for cable terminals – included • Cable terminals – not included
• Connection of the fibre optic to the equipment of SS – not included
MV side:
• MV switchgear - included • MV outgoing lines with terminals for solar plant - not included
LV side:
• Distribution panel and LV cables between equipment in the scope of supply –
included
• Connection of the fibre optic to the equipment of solar plant - not included
Control, protection and communication system:
• Terminal blocks inside the Protection and Control panels - included • Control cables between equipments and devices included in the scope of supply –
included
• Control cables between equipments and devices not included in the scope of supply –
not included
2.3 Exclusions from scope of supply
Supply and installation of primary earthing system
Design and execution of civil works
Other HV equipment requested by Enel/Terna at energy delivery point (i.e. surge arrester, current
transformers, disconnecting switch, etc)
Civil works (i.e. building, foundations, etc) for equipment requested by Enel/Terna at energy
delivery point
Topographical and height survey for the ground
Costs for the works for the presence of other services (cable or overhead power line, water
pipeline, etc) in the ground where SS will be built
Design, supply, installation and commissioning of optic fibres or other cables for
connecting other telecommunication system not included in ABB offer Cost of Client’s inspector to factory tests
Training
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Electrical Energy and water for construction site
Cost for Permissions, authorizations and expropriations.
Ministerial, Regional and Municipal Permits in order to get license to perform the works
Property inquiry license in order to get approval from the owner of the site to perform the works
Any other costs linked to archeological and property goods safeguard
Transportation and neutralization of all polluted materials coming out from escavation and/or
other working activities
Any other compensation (if any) for Terna/Enel for the use of “Progetto Unificato Enel
Direzione Costruzioni”.
Spare parts and any other materials or service not mentioned and not included in our offer.
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2.4 Technical characteristics of equipment
2.4.1 HV SS equipment
2.4.1.1 DISCONNECTOR with grounding blades
Manufacturer: Coelme or equivalent
Type TCB-E 245-2000
Standard: IEC 62271-102
Maximum system voltage: 245 KV
Rated current: 2000 A
BIL: 1050 kV
Power frequency withstand voltage (1 min.):
Rated short time withstand (1s):
460 kV
- RMS 40 kA
- Peak value 100 kA
Line blades operating mechanism: with motor
Grounding blades operating mechanism: with motor
AUXILIARIES
- Rated voltage - Line auxiliary contacts:
110Vcc 6NO+6NC
- Grounding auxiliary contacts: 4NO+4NC
2.4.1.2 DISCONNECTOR without grounding blades
Manufacturer: Coelme or equivalent
Type TCB 245-2000
Standard: IEC 62271-102
Maximum system voltage: 245 KV
Rated current: 2000 A
BIL: 1050 kV
Power frequency withstand voltage (1 min.):
Rated short time withstand (1s):
460 kV
- RMS 40 kA
- Peak value 100 kA
Grounding blades operating mechanism: with motor
AUXILIARIES
- Rated voltage
110Vcc
- Line auxiliary contacts: 6NO+6NC
2.4.1.3 GROUNDING BLADES for busbar
Manufacturer: Coelme or equivalent
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Type ES 245-40
Standard: IEC 62271-102
Maximum system voltage: 245 KV
BIL: 1050 kV
Power frequency withstand voltage (1 min.): 460 kV
Rated short time withstand (1s):
- RMS 40 kA - Peak value 100 kA
Grounding blades operating mechanism: with motor
AUXILIARIES
- Rated voltage 110Vcc - Grounding auxiliary contacts: 4NO+4NC
2.4.1.4 CIRCUIT BREAKER
Manufacturer: ABB
Type: LTB 245E1 – BLG 1002A
Standard: IEC 62271-100
Frequency 50 Hz
N° poles: 3
Insulation: SF6
Maximum system voltage: 245 kV
Rated Voltage: 220 kV
Rated current: 2000 or 1000 A
Rated short-time withstand current 50 kA
Rated making current 125 kA
Rated short circuit duration 1 s
Short duration power frequency withstand voltage 1 min: 460 kV
Lightning Impulse withstand voltage 1/50 micros: 1050 kV
Operating mechanism (spring type) BLG1002A-three pole operated
Rated operating sequence acc. to IEC O - 0.3 s - CO -1 min – CO
AUXILIARIES
- Motor 110 Vcc - Operating coils 110 Vcc
- Auxiliary relay 110 Vcc
- Heater 230 Vca
Auxiliary contacts: 9NO+9NC
2.4.1.5 INDUCTIVE VOLTAGE TRANSFORMER
Manufacturer: Arteche or equivalent
Type UTF 245
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Standard: IEC 60044-2
Maximum system voltage: 245 kV
Transformer ratio: 220000:3/100:3 V
Performance: 30 VA Cl. 0.2 UTF
Rated voltage factor: 1,5
Short duration power frequency withstand voltage 1 min: 460 kV
Lightning Impulse withstand voltage 1/50 micros: 1050 Kv
2.4.1.6 CAPACITIVE VOLTAGE TRANSFORMER
Manufacturer: ABB
Type: CPB 245
Standard: IEC 60044-2
Maximum system voltage: 245 kV
Transformer ratio: 220000:3/100:3 V/100:3 V
Performance:
- protection core 1: 30 VA 3P - protection core 2: 30 VA 3P
Rated voltage factor: 1,9
Short duration power frequency withstand voltage 1 min: 460 kV
Lightning Impulse withstand voltage 1/50 micros: 1050 kV
2.4.1.7 CURRENT TRANSFORMER
Manufacturer ABB
Type TG 245
Standard IEC 185
Insulation SF6
Maximum system voltage: 245 kV
Rated Voltage: 220 Kv
Short duration power frequency withstand voltage 1 min: 460 kV
Lightning Impulse withstand voltage 1/50 micros: 1050 kV
Rated short-time withstand current 50 kA
Rated primary transformer ratio 200-400 A
Rated secondary transformer ratio 5-5-5 A
Core number 1 / 3
Burdens:
Metering core 1: 20 VA Cl 0.2 Metering core 2: 20VA-5P10
Protection core 1: 20VA-5P10
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2.4.1.8 SURGE ARRESTER
Manufacturer: ABB
Type: EXLIM Q 192 EH 245
Reference Standards: IEC 99-4
Insulation: normal
Rated Voltage: 192 kV
Max. Residual Voltage with current wave 8/20 s:
5 kA 429 kV
10 kA 452 kV
20 kA 497 kV
Max. Residual Voltage with current wave 30/60 s:
0,5 kA 369 kV
1 kA 381 kV
2 kA 396 kV
Discharge class according to IEC standards: 3
Surge counter included type EXCOUNT-A
2.4.2 Power Transformer (Preliminary design)
Type Outdoor
Rated Power [MVA] 50/63
Cooling ONAN/ONAF
Primary Voltage [V] 220.000
Primary Tapings +-10x1 % on load
Secondary Voltage [V] 30.000
Impedance: 15 %
Load losses at 75°C: 295kW
No Load losses: 42kW
For details see Annex I.
2.4.3 Metallic structures, HV terminals and connections
It will be foreseen the following materials:
All HV connection materials i.e. terminal connectors, aluminum tube, clamps. All
connection materials foreseen are permanent corona-free connections with sufficient
thermal/mechanical strength for continuous and short circuit condition.
All metallic tubular structures for HV equipment (calculation according to D.P.R. 1062 dated 21 June 1968; hot deep galvanization shall be carried out according to CEI 7-6 fasc. 239 standard)
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2.4.4 MV switchgear
It will be foreseen a 30 kV GIS insulated switchgear type ZX1.2.
The switchgear composition is:
Typical unit N°
Incoming line units 2
Junction unit 1
Outgoing line units 6
Measurement unit 2
Auxiliary Transformer unit 2
For details see Annex II.
2.4.5 MV/LV auxiliary transformer
It will be foreseen N°2 auxiliary transformers 30/0,4 kV 100 kVA
General Characteristics
Manufacturer:
Type:
Rated Frequency:
Insulation:
Rated Power:
ABB or equivalent
3Ph
50
resin
100
Hz
kVA
Rated voltage (no load):
• MV
30
kV
• LV 0.40 kV
Tap changer no load: +/- 2 x 2.5 %
Winding:
• MV Winding:
Delta
• LV Winding: Star
Vector group: Dyn11
Vsc% 4%
2.4.6 Protection and Control system
It will be supplied an electrical control and monitoring system with the following
characteristics:
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ELECTRICAL CONTROL AND MONITORING SYSTEM Q.ty
Y Protection and Control Panel 1
In One Panel 800x800x2200 IP41:
Incoming Feeder - REC650 Control and Monitoring relay (27/59-59N-21) 1
- RXMVB 4 – Lockout Relay (86) 1
- RXMS 1- Tripping or trip-free Relay (94) 1
Transformer 1
- REC650 Control and Monitoring relay (27/59-59N-50/51-50N/51N-81><) 1
- RET650 Monitoring relay (87T-90-50BF) 1
- RXMVB 4 – Lockout Relay (86) 1
- RXMS 1- Tripping or trip-free Relay (94) 1
Transformer 2
- REC650 Control and Monitoring relay (27/59-59N-50/51-50N/51N-81><) 1
- RET650 Monitoring relay (87T-90-50BF) 1
- RXMVB 4 – Lockout Relay (86) 1
- RXMS 1- Tripping or trip-free Relay (94) 1
n.°1 RXSF1 – (80) 1
CONTROL SYSTEM
Y RTU560 for telecontrol with ENEL 1
In One Panel 800x800x2200 IP41
RTU560
- CSR 01 Basic Rack 1 - Ext. Sub-Rack 19 slots 1
- Supply Unit x RTU560 (560PSU01) 1
- Supply Unit x RTU560 (560PSU02) 2
- CPU CMU05, 4 ser 2 Ethernet 3
- Basic Licence 2
- HMI Licence (Incl. PLC/Archives Licence) 1
- Analog Input (23AE23) 2
- Binary Input (23BE23) 6
- Binary Output (23BA20) 1
- Power supply unit per 23BA20 1
- Meinber M300 GPS 1
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- Router 2811 2
- Switch HP 2524 2
- Module 560 CVT 02 R0001 (CT/VT Interface 110 Vac, 1A) 3
- Switch Ruggedcom 1
- REC670 – Disturbance Recorder 1
Y SCADA INTEGRATE HMI System (supplied loose) 1 - Industrial PC 1
- Monitor 1
- Mouse + Keyboard 1
- Deskjet Printer 1
- RCE Printer 1
Y Disturbance recorder
- PC Desktop + Monitor LCD 1
- Mouse + Keyboard 1
- Modem ISDN 1
- PCM600 basic software for disturbance recorder 1
Y Switch interface with MV
- Switch Ruggedcom 1
PROJECT ACTIVITY
Y Commissioning
- Commissioning (20days)
- Spare Parts for Commissioning (One relè for type)
It shall be supplied also the Electrical protection coordination and selectivity study.
For details see Annex III.
2.4.7 AC/CC distribution panel and auxiliary systems
It will be supplied:
N°1 AC/DC distribution panel with the following characteristics:
• AC Distribution: three-poles miniature circuit breakers (MCB) from 10 to 25 A • DC Distribution: two-poles miniature circuit breakers (MCB) from 10 to 25 A
N°1 rectifier/battery charger 60A – 400Vac/110Vcc, suitable for automatic recharging of
the battery and, at the same time, for feeding the 110 V d.c. users, directly connected in
parallel to the battery.
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N°1 sealed lead battery; the battery shall be mounted in a panel.
2.4.8 Energy Measurement panel
It shall be supplied:
N°1 Energy Meter (class 0,2) for HV metering
N°6 Energy Meters for MV metering
Cables and accessories
2.4.9 LV-MV Cables
The following MV cables will be supplied and installed:
1x400mm
2 type RG7H1R 18-30kV to connect the two power transformers to MV main
distribution board.
1x70mm2
type RG7H1R 18-30kV to connect the MV main distribution board to two
Auxiliary MV/LV transformers.
All LV cables, that connect the equipment of the scope of supply, are included in our offer.
2.4.10 Generator set
It shall be supplied an emergency generator set with the following characteristics:
Rated voltage: 400 V
Rated Power 20 kVA
Type low noise
Tank 46 l
Autonomy 10 h
2.4.11 Internal lighting system and electrical sockets for SS building
For the SS building they shall be supplied lighting and electrical sockets systems with the
following materials:
Fluorescent lamps type 1x36W for ordinary lighting
Fluorescent lamps type 1x11W with micro-inverter for emergency lighting (1h autonomy)
Standard sockets type 2P+T 230V 10-16A
Switches
Cables, conduits and accessories
2.4.12 External lighting system
It shall be supplied an external lighting system with the following equipment:
fibreglass poles with aluminum lamps with power 150W and/or 400W
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Cables and accessories
2.4.13 Fire detection system - Intrusion detection system - HVAC system
It shall be supplied a fire detection system with the following equipment:
control unit with battery
smoke detectors
Cables and accessories
It shall be supplied an intrusion detection system with the following equipment:
control unit with battery
badge connecting device
detectors with magnetic contacts
external siren
Cables and accessories
It shall be supplied n°1 HVAC systems for LV and telecommunication panels room with the
following characteristics:
Cooler power: 8150 BTU/h
Electrical Power 850 W
Noise level 37DBA
Cooler R22
2.4.14 Secondary and primary earthing system
It will be foreseen the secondary earthing system.
For the underground earthing system (primary earthing system) ABB will provide only the
design. The execution and the supply of primary earthing system will be included in the
scope of supply of the company who will realize the civil works.
At the end of erection of all substation, measuring of step and touch voltages will be done to
verify they are not exceeding the limit values given in the standards.
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2.5 Erection, Commissioning and technical documentations
2.5.1 Erection
All the activities required to bring the substations completely working shall be provided.
The erection & mounting activity shall be carried out in according to the CEI & IEC
standards.
2.5.2 Commissioning & testing
The commissioning and testing of the HV equipment shall be carried out in accordance with
the following standards:
- CEI 42-4
- CEI 42-5
- fasc. 405: ac circuit breaker with rated voltage > 1000 V
- fasc. 469: ac disconnecting and earthing switches with rated voltage > 1000 V
- fasc. 236: current transformers
Type test are not included, reports on similar tests and test certificates will be delivered.
Routine tests will be performed according to IEC standard.
The site commissioning shall be carried out the completion of the erection activity of the
single functional unit. Therefore, all the equipment, wiring and HV&MV elements of each
functional unit shall be tested & checked at the same time.
All on site verification needed to prove the complete functionality of the system will be
performed, namely:
- dimensional checks (check of insulation and clearance distances, levelling, etc....)
- operating checks for controls, indications, alarms, interlocks, etc....
- measuring of insulation resistance for LV panels and circuits
- check of continuity of protection conductor circuits
2.5.3 Engineering documentation
The following documentation shall be provided:
General S/S technical table
S/S Single line diagram
Main Equipment list
S/S Layout with section and plan views
Logic block diagram
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Overall dimensional drawings of metallic structures
Static and dynamic table on foundations
Earthing system calculation
Equipment overall dimensional drawings
Earthing system layout
Lighting system layout
Functional wiring diagrams
Shipping documents
Routine test reports
Installation and maintenance manual for equipment
Protection Setting table
Start up & Commissioning report